Completeness map for our survey. The lines represent the completeness of our observations as derived from the sensitivity limit for undetected companion candidates (see Sect. 3.1). The lines are, from top to bottom, 99%, 90%, 70%, 50%, 30%, 10%, and 1% completeness. The full circles represent the companion candidates found in our study that we consider to be physical, while the open circles represent the companion candidates we consider to be chance projections.